Polk Audio Atrium 4 Outdoor Speakers (Pair, White) – All-Weather Durability & Rich Bass

Polk Audio Atrium 4 Outdoor Speakers: Sound Anywhere, All Weather Ready

Designed to deliver big-room sound in tight outdoor spaces, the Atrium 4 pair combines a compact footprint with serious performance. The speaker meets or exceeds military environmental endurance specs, so it can handle sun, heat, cold, and rain while keeping audio faithful and clear.

Compact brilliance with room-filling coverage

Its 4.5" Dynamic Balance woofer uses mineral-filled polypropylene and a durable butyl rubber surround for notable bass response. The 0.75" anodized aluminum dome tweeter, driven by a neodymium magnet, contributes smooth, extended highs. The steeply angled baffle helps mid- and high-frequency dispersion across larger areas without sacrificing detail.

Easy installation and flexible placement

Polk's Speed-Lock mounting system makes installation quick and simple—just click, aim, and tighten. The speakers can be mounted vertically or horizontally to suit different layouts, and the gold-plated binding posts ensure a solid connection to outdoor amplifiers or AVRs.

Rugged durability and finishes

All-Weather Certification means Atrium 4 is built to resist the elements, while the white or black paintable finishes let you tailor the look to your space. The compact form factor helps you place speakers around a pool, along a deck, or under eaves without crowding sightlines.

• All-Weather Certification protects against extreme temperatures and heavy rain.
• Ultra-compact 4.5" woofer plus 0.75" tweeter for balanced outdoor sound.
• Steep dispersion enhances coverage from a single pair across patios or yards.

Real-life scenarios:

• Poolside listening for outdoor entertaining with friends and family.
• Deck gatherings where background music or playlists fill the space with even sound.
• Sunroom or backyard zones where pairs can drive stereo or multi-zone setups.

Note: The Atrium 4 is designed to pair with wired amplifiers or AVRs. While performance depends on placement and system matching, the design emphasizes versatile placement and consistent performance across seasons.